Multi-fluid and Hybrid Models of Waves in Coronal Structures

日冕结构中波的多流体和混合模型

• 批准号: 0135889
• 负责人: Leon Ofman
• 金额: $ 28.23万
• 依托单位: Catholic University of America
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-05-15 至 2006-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0135889&HistoricalAwards=false
• 关键词: Multi; fluid; Hybrid; Models; Waves

Modeling of the fast solar wind and streamers will be carried out based on a pair of interlaced computer codes. One will be a 3D three-fluid code encompassing electrons, protons and one species of heavy ion. The other is a kinetic hybrid code where the protons and heavy ions are treated as particles and the electrons as a fluid. The hybrid code will be used to study the effect of high-frequency kinetic Alfven waves on the distribution functions, and in particular to determine the damping of these waves and their heating of the plasma. The results will be incorporated in the fluid simulation, and the results compared with observations, like ion flow speeds and effective temperature, derived from instruments on board SOHO and TRACE.

快速太阳风和流光的建模将基于一对交错的计算机代码进行。其中之一是包含电子、质子和一种重离子的 3D 三流体代码。另一种是动力学混合代码，其中质子和重离子被视为粒子，电子被视为流体。混合代码将用于研究高频动能阿尔文波对分布函数的影响，特别是确定这些波的阻尼及其对等离子体的加热。结果将纳入流体模拟中，并将结果与​​来自 SOHO 和 TRACE 上仪器的观测结果（例如离子流速度和有效温度）进行比较。